Design of Choking Cascade Turns.

Abstract

Five different shock-positioning cascades, for short-radius turns in ramjet inlet diffusers, were designed and tested on the AFIT water table. These flow controllers were to perform the same function as the conventional arrangement of an aerodynamic grid and a long-radius turn. The tests were to determine the suitability of the water table for such experimentation, in addition to determining the flow-control capabilities and pressure recovery of the cascades. All five designs accomplished the flow-control function as designed, and two designs exhibited the same or better pressure recovery than the aerodynamic grid. The water table proved to be an excellent means of testing these cascades, primarily due to the ease of flow visualization in the tests done. The shock-positioning cascade, short-radius turn concept shows promise and should be tested further in gas-dynamic apparatus. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA124792

Entities

People

  • Jason Baird

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Air Force
  • Back Pressure
  • Boundary Layer
  • Combustion
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Froude Number
  • Gas Flow
  • Guide Vanes
  • Hydrodynamics
  • Hypervelocity Flow
  • Measurement
  • Ramjet Engines

Readers

  • Combustion and Flow Dynamics.
  • Robotics and Automation.